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- function range(from, to){
- var arr = [];
- for(var i=from; i!=to; i+=from<to ? 1 : -1){
- arr.push(i);
- }
- return arr;
- };
- Array.prototype.foreach = function(func){
- for(var i=0; i<this.length; i++){
- func.apply(this[i]);
- }
- };
- function print(s){
- console.log(s)
- };
- function mod_range(i){
- return i%2 ? range(1, i+1) : range(i, 0, -1);
- };
- range(1,11).foreach(function(){
- print(mod_range(this).join("-"));
- });
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